CVE-2021-29154

HIGH

Linux Kernel < 5.11.12 - Remote Code Execution via BPF JIT Branch Displacement

Title source: llm
STIX 2.1

Description

BPF JIT compilers in the Linux kernel through 5.11.12 have incorrect computation of branch displacements, allowing them to execute arbitrary code within the kernel context. This affects arch/x86/net/bpf_jit_comp.c and arch/x86/net/bpf_jit_comp32.c.

References (10)

Core 10
Core References
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
Issue Tracking, Third Party Advisory
https://news.ycombinator.com/item?id=26757760
Mailing List, Patch, Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/04/08/1

Scores

CVSS v3 7.8
EPSS 0.0004
EPSS Percentile 11.1%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-77
Status published
Products (13)
debian/debian_linux 9.0
fedoraproject/fedora 33
linux/linux_kernel 3.0 - 4.4.266
netapp/cloud_backup
netapp/h300e_firmware
netapp/h300s_firmware
netapp/h410s_firmware
netapp/h500e_firmware
netapp/h500s_firmware
netapp/h700e_firmware
... and 3 more
Published Apr 08, 2021
Tracked Since Feb 18, 2026